#!/usr/bin/node
const user = {
  name:'王顶',
  age:43,
  qq:'123455'
};

const log = console.log;

log('name:%s',user.name);
log('age:%d',user.age);
log('user:%j',user);

log('qq:%s',user.qq);
log('qq:',user.qq);
log('qq:'+user.qq);
log(`qq:${user.qq}`);
